Pumping-jack.



C. B. ANDERSON.

PUMPING JACK.

APPLICATION FILED JUNE 8.1915

PatentedSept. 14, 1915.

1,153,746 2 SHEETS-SHE C. B. ANDERSON;

PUMPING JACK.

APPLICATION man mm: a. 1915.

1,158,?46. PatentedSept. 14, 1915.

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PUMPING-JACK.

To all whom it may concern:

Be it known that 1, CHARLES B. ANDER- son, a citizen of the United States, residing at Bluffton, in the county of Wells and State of Indiana, have invented a new and useful Pumping-Jack; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a new and useful pumping jack, designed for use in connection with water and oil pumps and the like.

One of the objects of the inventionis to provide mechanismof this designhaving a main oscillatory member for operating a pair of pivoted levers, and havingconnections with another lever which in turn is pivotally carried between saidpairof levers,

or even vertical reciprocation.

In practical fields the details of construction may necessitate alterations, falling within the scope of what is claimed.

The invention comprises further features and combination of parts, as hereinafter set forth, shown in the drawings and claimed.

In the drawings :Figure 1 is a view in perspective of the improved pumping jack constructed in accordance with the invention. Fig. 2 is a view in side elevation, showing the moving parts of the ack thrown in a different position to that shown in Fig. 1 and the pump rod raised. Fig. 3 is a vertical sectional view, showing the parts operated to the position shown in Fig. 1 with the pump rod lowered. Fig. 4 is an edge view. Fig. 5 is a detail view, showing the operative connections between the main oscillatory member and the pair of levers.

Referring more particularly to the draw ings, 1 designates the base of the pumping jack, which is provided with an elongated horizontally disposed opening 2. Pivoted at 3 in said opening between the sides of the base is the main oscillatory member 4, angular in contour, and which comprises arms 5 and 6, braced by the bar or member 7. Secured to the base at 8 and rising therefrom are the standards 9 and 10, and pivoted between the standards upon the pins 11 are two levers 12. Pivoted between the upper ends of the levers 12 on the pin 13 SpecificationofLetters Patent. Patented Sept, 14, 1915, A iplieation filedfJ'une 8,1915. Serial no.3ae2s.

is a third lever 14, the free extremity of which has pivotal connections at 15 to a suitable pump rod 16. A link 17 is provided having plates 18 secured to its opposite side faces at 19 and at its upper end, and between which plates the thirdlever 14 is pivoted at 20. The lower portion of the link 17 has plates 21 secured to its opposite faces, which plates in turn are pivoted at 22 to the arm 5 of the main oscillatory memher. The lower end portions of the levers 12 are provided with substantially semicircularcam openings 28, which are in registration. Cooperating with and inthe semic1rcular cam openings 23. are laterally eX- tending lugs 24, which are carried by the arm 6 of the main oscillatory member 4. Connecting the lower adjacent end portions of the, levers 12 is a pin 25, which engages first one and then another of the transverse grooves 26 and 27 of the edge portions 28 of the arms 6 of the oscillatory member 4, as said member rocks upon its pivot or fulcrum. Projecting laterally from the outer faces of the lower ends of the levers 12 are lugs 80, which, when the pump rod is in its lowered position and the levers 12 vertically engage recesses 31 of the edge faces 32 of the standards 9. It is to be noted that when the member 4 is oscillated upon its pivot in the direction of the arrow at, the lugs or pins 24 cam against the walls 83 of the substantially semi-circular opening 23, thereby rocking the levers 12 in the direction of the arrow 7), and through the medium of the link 17 the lever 14 is oscillated vertically in the direction of the arrow 0, and owing to the lever 14 being pivotally carried at the upper ends of the levers 12, the lever 14 not only oscillates vertically, but moves bodily, laterally and upwardly, so as to move the pump rod uniformly, vertically, and in a straight line. A reverse movement of the oscillatory member 4 will lower the pump rod vertically and in a straight line, owing to the cooperation of the lugs or pins 24 and the substantially semi-circular cam opening, and the cooperation between the arm 6 and the pin 25.

The invention having been set forth, what is claimed as new and useful is 1. In combination, a supporting'base, a pair of standards rising upwardly from the base, a pair of levers pivoted between the standards at their upper ends midway between the ends of the levers, an oscillatory member fulcrumed in the base comprising a vertical arm and a horizontal arm, connections between the horizontal arm and the vertical arm for bracing the same, a'third lever pivoted between the upper ends of said pair of levers, a link connection between the horizontal arm and the third lever, and loose connections between the vertical arm and the lower ends of said pair of levers, whereby as the oscillatory member is actuated a straight and uniform reciprocation may be imparted to a pump rodiwhich is adapted to be connected to the third lever.

2. In combination, a supporting base, a pair of standards rising upwardly from the base, a pair of levers pivoted between the standards at theirupper ends midway between the ends of the levers, an oscillatory member fulcrumed in the base comprising a vertical arm and a horizontal arm, connections between the horizontal arm and the vertical arm for bracing the same, a third lever pivoted between theupper ends of said pair of levers, a link connection between the horizontal arm and the third lever, and loose connections between the vertical arm and the lower ends of said pair of levers, whereby as the oscillatory member is actuated a straight and uniform reciprocation may be imparted to a pump rod which is adapted to be connected to the third lever, said loose connections consisting of substantially semicircular cam openings in the lower ends of said pair of levers, laterally extending lugs on the vertically extending arm of the oscillatory member cooperating in said semi-cir- 'cular cam opening, one edge of the vertical arm of said oscillatory member having transverse grooves, a pin connecting the lower ends of sald pa1r of levers engaging first one i then the other of said grooves, and means for limiting the movement of the lower ends of said pair of levers.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

7 CHARLES B. ANDERSON.

Witnesses: v

HERBERT J. BURGAN, EARL E. STRoHM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of I'atents,

Washington, D. 0. V 

